bookdao.java~3~

通过jsp,servlet,javaBean,三成架构实现的好友通讯录系统

package com.Dao;

import java.sql.*;
import com.db.DBManager;
import java.util.ArrayList;
import com.entity.BookBean;
public class bookDao
{
    public Connection conn;
    public PreparedStatement ps;
    public ResultSet rs;

    public bookDao()
    {
        conn=DBManager.getConnetion();
    }

    public ArrayList findBookByUserId(int userId)
    {
        ArrayList list=new ArrayList() ;
        String sql="select *from BOOK where userId=?";
        try
        {
            ps=conn.prepareStatement(sql);
            ps.setInt(1,userId);
            rs=ps.executeQuery();
            while(rs.next())
            {
                BookBean book=new BookBean();
                book.setId(rs.getInt(1));
                book.setName(rs.getString(2));
                book.setSex(rs.getString(3));
                book.setPhone(rs.getString(4));
                book.setAddress(rs.getString(5));
                book.setMobilePhone(rs.getString(6));
                book.setCompany(rs.getString(7));
                book.setComPhone(rs.getString(8));
                book.setComAddress(rs.getString(9));
                book.setRelation(rs.getInt(10));
                book.setUserId(rs.getInt(11));
                list.add(book);
            }

        }catch(Exception e)
        {
            e.printStackTrace();
        }
        return list;
    }

    public int delBookById(int bookId)
    {
        int result=0;
        String sql="delete from BOOK where id=?";
        try
        {
            ps=conn.prepareStatement(sql);
            ps.setInt(1,bookId);
            result=ps.executeUpdate();
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
        return result;
    }
}